Book-backing.



No. 65l,35l. Patented lune I2, `|900. F. HAGER.

800K BACKING.

(Application filed June 22; 1899.) (No Model.) 2 Sheets-Sheet 1.

WHA/5525.- f Y 1 92 1N: nnnlus PErERs co., PNaTo-Lrrno., wAsulNoToN, D.a Y

No. 65|,35L Patented lune I2, |900. F. HAGER.

BooK BAcKmG. y (Applivnton led June 22, 1899.)

2 Sheets-Sheet 2- (Nu Model.)

ISV

W INVENTOR. @mam/ y L@ v f n ATTORNEYJ ma MORRIS PETERS cu..PNoTuLITNo.. wAsMlnutm4 D. c.

UNITED STATES PATENT OFFICE6 FREDERICKIIAGER, OF PORTLAND, OREGON.

BOOK-BACKING.

SPECIFICATION forming part of Letters Patent No. 651,351, dated J' une12, 19.

Application filed J' une 22, 1899.

To all whom t may concern.-

Be it known that I, FREDERICK HAGER, a citizen of the United States, anda resident of Portland, county of Multnomah, and State of Oregon, havein vented certain new and useful Improvements in Book-Backings, of whichthe following is a specification, reference being had to theaccompanying drawings, forming a part thereof, in which similar lettersof reference indicate corresponding parts.

This invention vrelates to improvements in backs of the class employedin the art of bookbinding for backing and assembling the severalsignatures comprising a book-body.

The invention embodies a strip-sheet and a flexible base; and the objectthereof is to provide an efficient article of this character in whichthe strips comprising the strip-sheet are of a construction adapted tobe secured to the flexible base in perfect parallel alinement.

The invention will be hereinafter fully described, and specifically setforth in the annexed claims.

In the accompanying drawings, forming part of this specification, Figure1 is a face or plan view of a back embodying my improvements. Fig. 2 isa detail transverse sectional view taken on the line 2 2, Fig. l; andFigs. 3 and 4 are perspective views illustrating the relativearrangement of the back with a bookbody.

I-Ieretofore in thel bookbinders art these backs have been formed bypasting separate strips of cardboard upon a flexible base or fabric,said strips being arranged in pairs with their adjoining edges abuttingand the respective pairs being parallel and separated by a narrowintervening space; but this method of pasting the separate strips uponthe flexible base or fabric is exceedingly tedious and slow, and aperfect parallel aline-y ment of the pairs of strips is virtuallyimpossible. The variation in the width of the separating-spaces betweenthe respective pairs of strips makes the back irregular and precludesits perfect operation when applied in position in the vbinding of thebook. Itis the purpose of my present invention to entirely obviate theabove disadvantages and to produce a back in whichthe strips will beSerial No. 721,427. (No model.)

in perfect and accurate alinement, so thatk the maximum degree o'fefficiency and operation is secured and the time necessary in an effortto aline the severed strips is saved.

Referring tothe drawings, A designates vthe flexible base or sheet,which may bc of fabric or any other suitable or desired malferial.

B designates the stripsof cardboard or analogous material which arepasted upon the flexible base. These strips are produced by approvedmachinery in a series of pairs b bj having their meeting edges abutting,said pairs being in perfectly-parallel relative position and separatedby the narrow intervening space b; but the strips of the respectivepairs are connected by narrow integral necks n, extending across theintervening space b', In practice the series of strips, as just abovedescribed, are provided upon their backs with mucilage or other suitableadhesive substance by which they maybe pasted upon the flexible base A,and it will be understood that the narrow integral connecting-necks n,will retain the strips in permanant connection and parallel alinementuntil they are secured to the flexible base, thus avoiding allguesswork, loss of time, or the use of the eye in securing a parallelalinement of the strips.

Another important feature of my improvements is that the adhesivesubstance is applied to and carried upon the back of theconnecting-strips, so that only that part of the flexible base which iscovered by the strips receives-any of the adhesive substance, While inthe practice heretofore pursued in the art in the operation of pastingsingle strips one by one upon the flexible base the adhesive substancewas first applied to the Whole surface of the flexible base and thestrips were set upon said adhesive surface, which operation was not onlyuncleanly, but the adhesive substance also caused theflexible base toshrink and become stiff and hard.

The operation and advantages of my inven tion will be readily understoodby those skilled in the art to which it appertains.

The several signatures, as C, comprising the book-body are respectivelysewed to the flexible base A by means of threads c, which pass throughthe said base into the space b. The

IOO

strips are then folded upon each other to bring the several signaturestogether and form the book-body C', as illustrated by Fig. 4 of thedrawings. Theintegral narrow connecting-necks n will not interfere toany degree whatever with the flexibility secured by the interveningspaces b when my improved backing is applied in position, and after thestrips are secured uponl the flexible base and the backing is inposition the dividingcut line, as shown at Z, between the respectivestrips of each pair, which forms the abutting edges of said strips, willopen up freely, while the exact uniform size of the spaces b will insurea true and perfect operation.

I do not confine myself to the specific details of mechanicalconstruction as herein shown and described, as it is obvious that underthe scope of my invention I am entitled to structural variations.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. As an improved article of manu faetu re, a strip-sheet for backingand assembling booksignatures,'embodyinga pair of strips in parallelposition with a uniform intervening space bridged by integral narrowconnectingnecks extending between said strips, substantially as shownand described.

2. As an im proved article of manufacture, a strip-sheet for backing andassembling booksignatures, embodying pairs of strips with lhei r meetingedges abutting and retained together, said respective pairs being inparallel position and separated by a uniform intel'- -vening spacebridged by an integral narrow connecting-neck extending between thestrips of the respective pairs, substantially as and for the purpose setforth.

3. As an improved article of manufacture, a strip-sheet for backing andassembling booksignatures, embodying pairs of strips in parallelposition and separated by a uniform intervening space bridged' byintegral narrow connecting-necks, said strip-sheet being provided withand carrying upon its back an adhesive substance, whereby it may beapplied to a flexible base, substantially as and for the purpose setforth.

4. As an improvement in backs for assembling book-signatures, thecombination, with a flexible base or fabric, of a strip-sheet embodyingpairs of strips in parallel position separated by uniform interveningspaces bridged by integral narrow connecting-necks, and means forattaching said strip-sheet to the flexible base, substantially as andfor the purpose set forth.

5. As an improved back for assembling book signatures, the combination,with a flexible base or fabric, of a strip-sheet embodying pairs ofstrips in parallel position separated by uniform intervening spacesbridged by integral narrow connecting-necks, and an adhesive agentattaching said strip-sheet to the flexible base, substantially as shownand described.

In testimony that I claim the foregoing as my invention l have signed myname, in presence of two witnesses, this 13th day of June,

iFREDERICK HAGER. TWitnesses:

HARRY l. ADAMS, DAVID M. DoNAUeI-i.

